/* Generic remote debugging interface for simulators.
- Copyright (C) 1993-2016 Free Software Foundation, Inc.
+ Copyright (C) 1993-2019 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Steve Chamberlain (sac@cygnus.com).
#include <setjmp.h>
#include "terminal.h"
#include "target.h"
+#include "process-stratum-target.h"
#include "gdbcore.h"
#include "gdb/callback.h"
#include "gdb/remote-sim.h"
#include "arch-utils.h"
#include "readline/readline.h"
#include "gdbthread.h"
+#include "gdbsupport/byte-vector.h"
/* Prototypes */
-extern void _initialize_remote_sim (void);
-
static void init_callbacks (void);
static void end_callbacks (void);
static void gdb_os_error (host_callback *, const char *, ...)
ATTRIBUTE_NORETURN;
-static void gdbsim_kill (struct target_ops *);
+/* Naming convention:
-static void gdbsim_load (struct target_ops *self, const char *prog,
- int fromtty);
+ sim_* are the interface to the simulator (see remote-sim.h).
+ gdbsim_* are stuff which is internal to gdb. */
-static void gdbsim_open (const char *args, int from_tty);
+static const target_info gdbsim_target_info = {
+ "sim",
+ N_("simulator"),
+ N_("Use the compiled-in simulator.")
+};
-static void gdbsim_close (struct target_ops *self);
+struct gdbsim_target final
+ : public memory_breakpoint_target<process_stratum_target>
+{
+ gdbsim_target () = default;
-static void gdbsim_detach (struct target_ops *ops, const char *args,
- int from_tty);
+ const target_info &info () const override
+ { return gdbsim_target_info; }
-static void gdbsim_prepare_to_store (struct target_ops *self,
- struct regcache *regcache);
+ void close () override;
-static void gdbsim_files_info (struct target_ops *target);
+ void detach (inferior *inf, int) override;
-static void gdbsim_mourn_inferior (struct target_ops *target);
+ void resume (ptid_t, int, enum gdb_signal) override;
+ ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
-static void gdbsim_interrupt (struct target_ops *self, ptid_t ptid);
+ void fetch_registers (struct regcache *, int) override;
+ void store_registers (struct regcache *, int) override;
+ void prepare_to_store (struct regcache *) override;
-void simulator_command (char *args, int from_tty);
+ enum target_xfer_status xfer_partial (enum target_object object,
+ const char *annex,
+ gdb_byte *readbuf,
+ const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len) override;
-/* Naming convention:
+ void files_info () override;
- sim_* are the interface to the simulator (see remote-sim.h).
- gdbsim_* are stuff which is internal to gdb. */
+ void kill () override;
-/* Forward data declarations */
-extern struct target_ops gdbsim_ops;
+ void load (const char *, int) override;
-static const struct inferior_data *sim_inferior_data_key;
+ bool can_create_inferior () override { return true; }
+ void create_inferior (const char *, const std::string &,
+ char **, int) override;
+
+ void mourn_inferior () override;
+
+ void interrupt () override;
+
+ bool thread_alive (ptid_t ptid) override;
+
+ std::string pid_to_str (ptid_t) override;
+
+ bool has_all_memory () override;
+ bool has_memory () override;
+};
+
+static struct gdbsim_target gdbsim_ops;
+
+/* Value of the next pid to allocate for an inferior. As indicated
+ elsewhere, its initial value is somewhat arbitrary; it's critical
+ though that it's not zero or negative. */
+static int next_pid;
+#define INITIAL_PID 42000
/* Simulator-specific, per-inferior state. */
struct sim_inferior_data {
+ explicit sim_inferior_data (SIM_DESC desc)
+ : gdbsim_desc (desc),
+ remote_sim_ptid (next_pid, 0, next_pid)
+ {
+ ++next_pid;
+ }
+
+ ~sim_inferior_data ();
+
/* Flag which indicates whether or not the program has been loaded. */
- int program_loaded;
+ int program_loaded = 0;
/* Simulator descriptor for this inferior. */
SIM_DESC gdbsim_desc;
ptid_t remote_sim_ptid;
/* Signal with which to resume. */
- enum gdb_signal resume_siggnal;
+ enum gdb_signal resume_siggnal = GDB_SIGNAL_0;
/* Flag which indicates whether resume should step or not. */
- int resume_step;
+ int resume_step = 0;
};
+static inferior_key<sim_inferior_data> sim_inferior_data_key;
+
/* Flag indicating the "open" status of this module. It's set to 1
in gdbsim_open() and 0 in gdbsim_close(). */
static int gdbsim_is_open = 0;
-/* Value of the next pid to allocate for an inferior. As indicated
- elsewhere, its initial value is somewhat arbitrary; it's critical
- though that it's not zero or negative. */
-static int next_pid;
-#define INITIAL_PID 42000
-
/* Argument list to pass to sim_open(). It is allocated in gdbsim_open()
and deallocated in gdbsim_close(). The lifetime needs to extend beyond
the call to gdbsim_open() due to the fact that other sim instances other
struct sim_inferior_data *sim_data;
SIM_DESC new_sim_desc = (SIM_DESC) arg;
- sim_data = ((struct sim_inferior_data *)
- inferior_data (inf, sim_inferior_data_key));
+ sim_data = sim_inferior_data_key.get (inf);
return (sim_data != NULL && sim_data->gdbsim_desc == new_sim_desc);
}
get_sim_inferior_data (struct inferior *inf, int sim_instance_needed)
{
SIM_DESC sim_desc = NULL;
- struct sim_inferior_data *sim_data
- = (struct sim_inferior_data *) inferior_data (inf, sim_inferior_data_key);
+ struct sim_inferior_data *sim_data = sim_inferior_data_key.get (inf);
/* Try to allocate a new sim instance, if needed. We do this ahead of
a potential allocation of a sim_inferior_data struct in order to
if (sim_data == NULL)
{
- sim_data = XCNEW(struct sim_inferior_data);
- set_inferior_data (inf, sim_inferior_data_key, sim_data);
-
- /* Allocate a ptid for this inferior. */
- sim_data->remote_sim_ptid = ptid_build (next_pid, 0, next_pid);
- next_pid++;
-
- /* Initialize the other instance variables. */
- sim_data->program_loaded = 0;
- sim_data->gdbsim_desc = sim_desc;
- sim_data->resume_siggnal = GDB_SIGNAL_0;
- sim_data->resume_step = 0;
+ sim_data = sim_inferior_data_key.emplace (inf, sim_desc);
}
else if (sim_desc)
{
get_sim_inferior_data_by_ptid (ptid_t ptid, int sim_instance_needed)
{
struct inferior *inf;
- int pid = ptid_get_pid (ptid);
+ int pid = ptid.pid ();
if (pid <= 0)
return NULL;
/* Free the per-inferior simulator data. */
-static void
-sim_inferior_data_cleanup (struct inferior *inf, void *data)
+sim_inferior_data::~sim_inferior_data ()
{
- struct sim_inferior_data *sim_data = (struct sim_inferior_data *) data;
-
- if (sim_data != NULL)
- {
- if (sim_data->gdbsim_desc)
- {
- sim_close (sim_data->gdbsim_desc, 0);
- sim_data->gdbsim_desc = NULL;
- }
- xfree (sim_data);
- }
+ if (gdbsim_desc)
+ sim_close (gdbsim_desc, 0);
}
static void
static int
gdb_os_write_stdout (host_callback *p, const char *buf, int len)
{
- int i;
- char b[2];
-
ui_file_write (gdb_stdtarg, buf, len);
return len;
}
/* GDB version of printf_filtered callback. */
-static void
-gdb_os_printf_filtered (host_callback * p, const char *format,...)
+static void ATTRIBUTE_PRINTF (2, 3)
+gdb_os_printf_filtered (host_callback * p, const char *format, ...)
{
va_list args;
/* GDB version of error vprintf_filtered. */
-static void
+static void ATTRIBUTE_PRINTF (2, 0)
gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap)
{
vfprintf_filtered (gdb_stdout, format, ap);
/* GDB version of error evprintf_filtered. */
-static void
+static void ATTRIBUTE_PRINTF (2, 0)
gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap)
{
vfprintf_filtered (gdb_stderr, format, ap);
/* GDB version of error callback. */
-static void
+static void ATTRIBUTE_PRINTF (2, 3)
gdb_os_error (host_callback * p, const char *format, ...)
{
va_list args;
return regnum;
}
-static void
-gdbsim_fetch_register (struct target_ops *ops,
- struct regcache *regcache, int regno)
+void
+gdbsim_target::fetch_registers (struct regcache *regcache, int regno)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
+ struct inferior *inf = find_inferior_ptid (regcache->ptid ());
struct sim_inferior_data *sim_data
- = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+ = get_sim_inferior_data (inf, SIM_INSTANCE_NEEDED);
if (regno == -1)
{
for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
- gdbsim_fetch_register (ops, regcache, regno);
+ fetch_registers (regcache, regno);
return;
}
{
/* For moment treat a `does not exist' register the same way
as an ``unavailable'' register. */
- gdb_byte buf[MAX_REGISTER_SIZE];
- int nr_bytes;
-
- memset (buf, 0, MAX_REGISTER_SIZE);
- regcache_raw_supply (regcache, regno, buf);
+ regcache->raw_supply_zeroed (regno);
break;
}
default:
{
static int warn_user = 1;
- gdb_byte buf[MAX_REGISTER_SIZE];
+ int regsize = register_size (gdbarch, regno);
+ gdb::byte_vector buf (regsize, 0);
int nr_bytes;
gdb_assert (regno >= 0 && regno < gdbarch_num_regs (gdbarch));
- memset (buf, 0, MAX_REGISTER_SIZE);
nr_bytes = sim_fetch_register (sim_data->gdbsim_desc,
gdbarch_register_sim_regno
(gdbarch, regno),
- buf,
- register_size (gdbarch, regno));
- if (nr_bytes > 0
- && nr_bytes != register_size (gdbarch, regno) && warn_user)
+ buf.data (), regsize);
+ if (nr_bytes > 0 && nr_bytes != regsize && warn_user)
{
fprintf_unfiltered (gdb_stderr,
"Size of register %s (%d/%d) "
"incorrect (%d instead of %d))",
gdbarch_register_name (gdbarch, regno),
regno,
- gdbarch_register_sim_regno
- (gdbarch, regno),
- nr_bytes, register_size (gdbarch, regno));
+ gdbarch_register_sim_regno (gdbarch, regno),
+ nr_bytes, regsize);
warn_user = 0;
}
/* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
which registers are fetchable. */
/* Else if (nr_bytes < 0): an old simulator, that doesn't
think to return the register size. Just assume all is ok. */
- regcache_raw_supply (regcache, regno, buf);
+ regcache->raw_supply (regno, buf.data ());
if (remote_debug)
{
fprintf_unfiltered (gdb_stdlog,
"gdbsim_fetch_register: %d", regno);
/* FIXME: We could print something more intelligible. */
- dump_mem (buf, register_size (gdbarch, regno));
+ dump_mem (buf.data (), regsize);
}
break;
}
}
-static void
-gdbsim_store_register (struct target_ops *ops,
- struct regcache *regcache, int regno)
+void
+gdbsim_target::store_registers (struct regcache *regcache, int regno)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
+ struct inferior *inf = find_inferior_ptid (regcache->ptid ());
struct sim_inferior_data *sim_data
- = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+ = get_sim_inferior_data (inf, SIM_INSTANCE_NEEDED);
if (regno == -1)
{
for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
- gdbsim_store_register (ops, regcache, regno);
+ store_registers (regcache, regno);
return;
}
else if (gdbarch_register_sim_regno (gdbarch, regno) >= 0)
{
- gdb_byte tmp[MAX_REGISTER_SIZE];
+ int regsize = register_size (gdbarch, regno);
+ gdb::byte_vector tmp (regsize);
int nr_bytes;
- regcache_cooked_read (regcache, regno, tmp);
+ regcache->cooked_read (regno, tmp.data ());
nr_bytes = sim_store_register (sim_data->gdbsim_desc,
gdbarch_register_sim_regno
(gdbarch, regno),
- tmp, register_size (gdbarch, regno));
- if (nr_bytes > 0 && nr_bytes != register_size (gdbarch, regno))
+ tmp.data (), regsize);
+
+ if (nr_bytes > 0 && nr_bytes != regsize)
internal_error (__FILE__, __LINE__,
_("Register size different to expected"));
if (nr_bytes < 0)
{
fprintf_unfiltered (gdb_stdlog, "gdbsim_store_register: %d", regno);
/* FIXME: We could print something more intelligible. */
- dump_mem (tmp, register_size (gdbarch, regno));
+ dump_mem (tmp.data (), regsize);
}
}
}
/* Kill the running program. This may involve closing any open files
and releasing other resources acquired by the simulated program. */
-static void
-gdbsim_kill (struct target_ops *ops)
+void
+gdbsim_target::kill ()
{
if (remote_debug)
fprintf_unfiltered (gdb_stdlog, "gdbsim_kill\n");
/* There is no need to `kill' running simulator - the simulator is
not running. Mourning it is enough. */
- target_mourn_inferior ();
+ target_mourn_inferior (inferior_ptid);
}
/* Load an executable file into the target process. This is expected to
not only bring new code into the target process, but also to update
GDB's symbol tables to match. */
-static void
-gdbsim_load (struct target_ops *self, const char *args, int fromtty)
+void
+gdbsim_target::load (const char *args, int fromtty)
{
- char **argv;
const char *prog;
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
if (args == NULL)
error_no_arg (_("program to load"));
- argv = gdb_buildargv (args);
- make_cleanup_freeargv (argv);
+ gdb_argv argv (args);
prog = tilde_expand (argv[0]);
/* This is called not only when we first attach, but also when the
user types "run" after having attached. */
-static void
-gdbsim_create_inferior (struct target_ops *target, char *exec_file, char *args,
- char **env, int from_tty)
+void
+gdbsim_target::create_inferior (const char *exec_file,
+ const std::string &allargs,
+ char **env, int from_tty)
{
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
int len;
- char *arg_buf, **argv;
+ char *arg_buf;
+ const char *args = allargs.c_str ();
if (exec_file == 0 || exec_bfd == 0)
warning (_("No executable file specified."));
(exec_file ? exec_file : "(NULL)"),
args);
- if (ptid_equal (inferior_ptid, sim_data->remote_sim_ptid))
- gdbsim_kill (target);
+ if (inferior_ptid == sim_data->remote_sim_ptid)
+ kill ();
remove_breakpoints ();
init_wait_for_inferior ();
+ gdb_argv built_argv;
if (exec_file != NULL)
{
- len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10;
+ len = strlen (exec_file) + 1 + allargs.size () + 1 + /*slop */ 10;
arg_buf = (char *) alloca (len);
arg_buf[0] = '\0';
strcat (arg_buf, exec_file);
strcat (arg_buf, " ");
strcat (arg_buf, args);
- argv = gdb_buildargv (arg_buf);
- make_cleanup_freeargv (argv);
+ built_argv.reset (arg_buf);
}
- else
- argv = NULL;
- if (!have_inferiors ())
- init_thread_list ();
-
- if (sim_create_inferior (sim_data->gdbsim_desc, exec_bfd, argv, env)
+ if (sim_create_inferior (sim_data->gdbsim_desc, exec_bfd,
+ built_argv.get (), env)
!= SIM_RC_OK)
error (_("Unable to create sim inferior."));
inferior_ptid = sim_data->remote_sim_ptid;
- inferior_appeared (current_inferior (), ptid_get_pid (inferior_ptid));
+ inferior_appeared (current_inferior (), inferior_ptid.pid ());
add_thread_silent (inferior_ptid);
insert_breakpoints (); /* Needed to get correct instruction
/* Called when selecting the simulator. E.g. (gdb) target sim name. */
static void
-gdbsim_open (const char *args, int from_tty)
+gdbsim_target_open (const char *args, int from_tty)
{
int len;
char *arg_buf;
strcat (arg_buf, " "); /* 1 */
strcat (arg_buf, args);
}
- sim_argv = gdb_buildargv (arg_buf);
+
+ gdb_argv argv (arg_buf);
+ sim_argv = argv.release ();
init_callbacks ();
gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, sim_argv);
static int
gdbsim_close_inferior (struct inferior *inf, void *arg)
{
- struct sim_inferior_data *sim_data
- = (struct sim_inferior_data *) inferior_data (inf, sim_inferior_data_key);
+ struct sim_inferior_data *sim_data = sim_inferior_data_key.get (inf);
if (sim_data != NULL)
{
ptid_t ptid = sim_data->remote_sim_ptid;
- sim_inferior_data_cleanup (inf, sim_data);
- set_inferior_data (inf, sim_inferior_data_key, NULL);
+ sim_inferior_data_key.clear (inf);
/* Having a ptid allocated and stored in remote_sim_ptid does
not mean that a corresponding inferior was ever created.
/* Close out all files and local state before this target loses control. */
-static void
-gdbsim_close (struct target_ops *self)
+void
+gdbsim_target::close ()
{
- struct sim_inferior_data *sim_data
- = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
-
if (remote_debug)
fprintf_unfiltered (gdb_stdlog, "gdbsim_close\n");
/* Takes a program previously attached to and detaches it.
The program may resume execution (some targets do, some don't) and will
no longer stop on signals, etc. We better not have left any breakpoints
- in the program or it'll die when it hits one. ARGS is arguments
- typed by the user (e.g. a signal to send the process). FROM_TTY
- says whether to be verbose or not. */
+ in the program or it'll die when it hits one. FROM_TTY says whether to be
+ verbose or not. */
/* Terminate the open connection to the remote debugger.
Use this when you want to detach and do something else with your gdb. */
-static void
-gdbsim_detach (struct target_ops *ops, const char *args, int from_tty)
+void
+gdbsim_target::detach (inferior *inf, int from_tty)
{
if (remote_debug)
- fprintf_unfiltered (gdb_stdlog, "gdbsim_detach: args \"%s\"\n", args);
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_detach\n");
- unpush_target (ops); /* calls gdbsim_close to do the real work */
+ unpush_target (this); /* calls gdbsim_close to do the real work */
if (from_tty)
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
}
return 0;
}
-static void
-gdbsim_resume (struct target_ops *ops,
- ptid_t ptid, int step, enum gdb_signal siggnal)
+void
+gdbsim_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal)
{
struct resume_data rd;
struct sim_inferior_data *sim_data
if (sim_data)
gdbsim_resume_inferior (find_inferior_ptid (ptid), &rd);
- else if (ptid_equal (ptid, minus_one_ptid))
+ else if (ptid == minus_one_ptid)
iterate_over_inferiors (gdbsim_resume_inferior, &rd);
else
error (_("The program is not being run."));
return 0;
}
-static void
-gdbsim_interrupt (struct target_ops *self, ptid_t ptid)
+void
+gdbsim_target::interrupt ()
{
- struct sim_inferior_data *sim_data;
-
- if (ptid_equal (ptid, minus_one_ptid))
- {
- iterate_over_inferiors (gdbsim_interrupt_inferior, NULL);
- }
- else
- {
- struct inferior *inf = find_inferior_ptid (ptid);
-
- if (inf == NULL)
- error (_("Can't stop pid %d. No inferior found."),
- ptid_get_pid (ptid));
-
- gdbsim_interrupt_inferior (inf, NULL);
- }
+ iterate_over_inferiors (gdbsim_interrupt_inferior, NULL);
}
/* GDB version of os_poll_quit callback.
deprecated_ui_loop_hook (0);
if (check_quit_flag ()) /* gdb's idea of quit */
- {
- clear_quit_flag (); /* we've stolen it */
- return 1;
- }
+ return 1;
return 0;
}
static void
gdbsim_cntrl_c (int signo)
{
- gdbsim_interrupt (NULL, minus_one_ptid);
+ gdbsim_ops.interrupt ();
}
-static ptid_t
-gdbsim_wait (struct target_ops *ops,
- ptid_t ptid, struct target_waitstatus *status, int options)
+ptid_t
+gdbsim_target::wait (ptid_t ptid, struct target_waitstatus *status, int options)
{
struct sim_inferior_data *sim_data;
static sighandler_t prev_sigint;
/* This target isn't able to (yet) resume more than one inferior at a time.
When ptid is minus_one_ptid, just use the current inferior. If we're
given an explicit pid, we'll try to find it and use that instead. */
- if (ptid_equal (ptid, minus_one_ptid))
+ if (ptid == minus_one_ptid)
sim_data = get_sim_inferior_data (current_inferior (),
SIM_INSTANCE_NEEDED);
else
sim_data = get_sim_inferior_data_by_ptid (ptid, SIM_INSTANCE_NEEDED);
if (sim_data == NULL)
error (_("Unable to wait for pid %d. Inferior not found."),
- ptid_get_pid (ptid));
+ ptid.pid ());
inferior_ptid = ptid;
}
that registers contains all the registers from the program being
debugged. */
-static void
-gdbsim_prepare_to_store (struct target_ops *self, struct regcache *regcache)
+void
+gdbsim_target::prepare_to_store (struct regcache *regcache)
{
/* Do nothing, since we can store individual regs. */
}
/* If this target doesn't have memory yet, return 0 causing the
request to be passed to a lower target, hopefully an exec
file. */
- if (!target->to_has_memory (target))
+ if (!target->has_memory ())
return TARGET_XFER_EOF;
if (!sim_data->program_loaded)
/* Target to_xfer_partial implementation. */
-static enum target_xfer_status
-gdbsim_xfer_partial (struct target_ops *ops, enum target_object object,
- const char *annex, gdb_byte *readbuf,
- const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
- ULONGEST *xfered_len)
+enum target_xfer_status
+gdbsim_target::xfer_partial (enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
{
switch (object)
{
case TARGET_OBJECT_MEMORY:
- return gdbsim_xfer_memory (ops, readbuf, writebuf, offset, len,
+ return gdbsim_xfer_memory (this, readbuf, writebuf, offset, len,
xfered_len);
default:
}
}
-static void
-gdbsim_files_info (struct target_ops *target)
+void
+gdbsim_target::files_info ()
{
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
/* Clear the simulator's notion of what the break points are. */
-static void
-gdbsim_mourn_inferior (struct target_ops *target)
+void
+gdbsim_target::mourn_inferior ()
{
- struct sim_inferior_data *sim_data
- = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
-
if (remote_debug)
fprintf_unfiltered (gdb_stdlog, "gdbsim_mourn_inferior:\n");
remove_breakpoints ();
generic_mourn_inferior ();
- delete_thread_silent (sim_data->remote_sim_ptid);
}
/* Pass the command argument through to the simulator verbatim. The
simulator must do any command interpretation work. */
-void
-simulator_command (char *args, int from_tty)
+static void
+simulator_command (const char *args, int from_tty)
{
struct sim_inferior_data *sim_data;
thus allocating memory that would not be garbage collected until
the ultimate destruction of the associated inferior. */
- sim_data = ((struct sim_inferior_data *)
- inferior_data (current_inferior (), sim_inferior_data_key));
+ sim_data = sim_inferior_data_key.get (current_inferior ());
if (sim_data == NULL || sim_data->gdbsim_desc == NULL)
{
registers_changed ();
}
-static VEC (char_ptr) *
-sim_command_completer (struct cmd_list_element *ignore, const char *text,
- const char *word)
+static void
+sim_command_completer (struct cmd_list_element *ignore,
+ completion_tracker &tracker,
+ const char *text, const char *word)
{
struct sim_inferior_data *sim_data;
- char **tmp;
- int i;
- VEC (char_ptr) *result = NULL;
- sim_data = ((struct sim_inferior_data *)
- inferior_data (current_inferior (), sim_inferior_data_key));
+ sim_data = sim_inferior_data_key.get (current_inferior ());
if (sim_data == NULL || sim_data->gdbsim_desc == NULL)
- return NULL;
+ return;
- tmp = sim_complete_command (sim_data->gdbsim_desc, text, word);
- if (tmp == NULL)
- return NULL;
+ /* sim_complete_command returns a NULL-terminated malloc'ed array of
+ malloc'ed strings. */
+ struct sim_completions_deleter
+ {
+ void operator() (char **ptr) const
+ {
+ for (size_t i = 0; ptr[i] != NULL; i++)
+ xfree (ptr[i]);
+ xfree (ptr);
+ }
+ };
+
+ std::unique_ptr<char *[], sim_completions_deleter> sim_completions
+ (sim_complete_command (sim_data->gdbsim_desc, text, word));
+ if (sim_completions == NULL)
+ return;
- /* Transform the array into a VEC, and then free the array. */
- for (i = 0; tmp[i] != NULL; i++)
- VEC_safe_push (char_ptr, result, tmp[i]);
- xfree (tmp);
+ /* Count the elements and add completions from tail to head because
+ below we'll swap elements out of the array in case add_completion
+ throws and the deleter deletes until it finds a NULL element. */
+ size_t count = 0;
+ while (sim_completions[count] != NULL)
+ count++;
- return result;
+ for (size_t i = count; i > 0; i--)
+ {
+ gdb::unique_xmalloc_ptr<char> match (sim_completions[i - 1]);
+ sim_completions[i - 1] = NULL;
+ tracker.add_completion (std::move (match));
+ }
}
/* Check to see if a thread is still alive. */
-static int
-gdbsim_thread_alive (struct target_ops *ops, ptid_t ptid)
+bool
+gdbsim_target::thread_alive (ptid_t ptid)
{
struct sim_inferior_data *sim_data
= get_sim_inferior_data_by_ptid (ptid, SIM_INSTANCE_NOT_NEEDED);
if (sim_data == NULL)
- return 0;
+ return false;
- if (ptid_equal (ptid, sim_data->remote_sim_ptid))
+ if (ptid == sim_data->remote_sim_ptid)
/* The simulators' task is always alive. */
- return 1;
+ return true;
- return 0;
+ return false;
}
-/* Convert a thread ID to a string. Returns the string in a static
- buffer. */
+/* Convert a thread ID to a string. */
-static char *
-gdbsim_pid_to_str (struct target_ops *ops, ptid_t ptid)
+std::string
+gdbsim_target::pid_to_str (ptid_t ptid)
{
return normal_pid_to_str (ptid);
}
/* Simulator memory may be accessed after the program has been loaded. */
-static int
-gdbsim_has_all_memory (struct target_ops *ops)
+bool
+gdbsim_target::has_all_memory ()
{
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
if (!sim_data->program_loaded)
- return 0;
+ return false;
- return 1;
+ return true;
}
-static int
-gdbsim_has_memory (struct target_ops *ops)
+bool
+gdbsim_target::has_memory ()
{
struct sim_inferior_data *sim_data
= get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NOT_NEEDED);
if (!sim_data->program_loaded)
- return 0;
-
- return 1;
-}
-
-/* Define the target subroutine names. */
+ return false;
-struct target_ops gdbsim_ops;
-
-static void
-init_gdbsim_ops (void)
-{
- gdbsim_ops.to_shortname = "sim";
- gdbsim_ops.to_longname = "simulator";
- gdbsim_ops.to_doc = "Use the compiled-in simulator.";
- gdbsim_ops.to_open = gdbsim_open;
- gdbsim_ops.to_close = gdbsim_close;
- gdbsim_ops.to_detach = gdbsim_detach;
- gdbsim_ops.to_resume = gdbsim_resume;
- gdbsim_ops.to_wait = gdbsim_wait;
- gdbsim_ops.to_fetch_registers = gdbsim_fetch_register;
- gdbsim_ops.to_store_registers = gdbsim_store_register;
- gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
- gdbsim_ops.to_xfer_partial = gdbsim_xfer_partial;
- gdbsim_ops.to_files_info = gdbsim_files_info;
- gdbsim_ops.to_insert_breakpoint = memory_insert_breakpoint;
- gdbsim_ops.to_remove_breakpoint = memory_remove_breakpoint;
- gdbsim_ops.to_kill = gdbsim_kill;
- gdbsim_ops.to_load = gdbsim_load;
- gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
- gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior;
- gdbsim_ops.to_interrupt = gdbsim_interrupt;
- gdbsim_ops.to_thread_alive = gdbsim_thread_alive;
- gdbsim_ops.to_pid_to_str = gdbsim_pid_to_str;
- gdbsim_ops.to_stratum = process_stratum;
- gdbsim_ops.to_has_all_memory = gdbsim_has_all_memory;
- gdbsim_ops.to_has_memory = gdbsim_has_memory;
- gdbsim_ops.to_has_stack = default_child_has_stack;
- gdbsim_ops.to_has_registers = default_child_has_registers;
- gdbsim_ops.to_has_execution = default_child_has_execution;
- gdbsim_ops.to_magic = OPS_MAGIC;
+ return true;
}
void
{
struct cmd_list_element *c;
- init_gdbsim_ops ();
- add_target (&gdbsim_ops);
+ add_target (gdbsim_target_info, gdbsim_target_open);
c = add_com ("sim", class_obscure, simulator_command,
_("Send a command to the simulator."));
set_cmd_completer (c, sim_command_completer);
-
- sim_inferior_data_key
- = register_inferior_data_with_cleanup (NULL, sim_inferior_data_cleanup);
}